Gaya APA
Karsinah, . (1978).
New english 900/Collier Macmillan ; project editor: Peggy Intrator .
Jena ::
Macmillan Publishing.
Gaya MLA
Karsinah, .
"New english 900/Collier Macmillan ; project editor: Peggy Intrator".
Jena ::
Macmillan Publishing,
1978.
.